Credit: Courtesy

Authorities say they've arrested a man accused of killing one of his family members at Dartmouth-Hitchcock Memorial Center in Lebanon, N.H. this afternoon.

Lebanon cops responding to a reported "active shooter" situation about 1:25 p.m. in an intensive care unit in the hospital's north building apprehended a male suspect without incident as he was trying to leave the grounds, New Hampshire Attorney General Gordon J. MacDonald said.

Investigators believe the suspect, whose name has not been released, killed a 70-year-old female patient who MacDonald referred to as a "family member." The victim's name has also not been released.

"SWAT teams have cleared the hospital and I can confirm that there are no additional physical injuries resulting from this incident," MacDonald said. "This is an ongoing investigation."